A two - step process has been developed to recover cobalt from arsenite ores.为了从亚砷酸盐矿中回收钴,开发了二段工艺.The absorption reactions of goethite and its precursors on arsenite were studied.观察了针铁矿及其前体对溶液中亚砷酸根离子的吸附过程和吸附性能.Copper ars...
他们称划船是最佳运动，它可以锻炼每一处主要肌肉群。They call rowing the perfect sport. It exercises every major muscle group.我们在外面划船的时候就发现风暴将至。We'd seen the storm brewing when we were out in the boat.上校倚仗权势让他的中士划船划了一路。The Captain pulled rank...